Textile Care Detergent Composition for Reduced Heat-Induced Smoking
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Solution Overview
Problem
Nonylphenol ethoxylates (NPEs) are environmentally unfavored due to their estrogen-like properties and persistence in the environment, while their alternatives, alcohol ethoxylates, can smoke when exposed to high heat in industrial laundry processes.
Innovation Solution
A detergent composition comprising a smoke-reducing surfactant package with a mole ratio of about 1.4:1 of anionic or amphoteric surfactants to free alcohol, including nonionic surfactants, which are phosphorous-free and nonionic, reducing smoke production when textiles are exposed to high temperatures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If alcohol ethoxylates are used as detergent surfactants, then environmental safety is improved, but smoking occurs when textiles are exposed to high heat
Solution Approach 1:
The patent changes the chemical composition parameters of the detergent by specifying a nonionic surfactant with controlled free alcohol content (0.1-5% by weight) and a specific mole ratio (1.4:1) of smoke-reducing surfactant package to free alcohol. This parameter optimization eliminates smoking while preserving the environmental benefits of alcohol ethoxylates.
Solution Approach 2:
The patent creates a composite surfactant system combining multiple components: anionic surfactants (1-50% wt), amphoteric surfactants (0-20% wt), and nonionic surfactants with controlled free alcohol (5-85% wt). This composite formulation achieves smoke reduction through synergistic interactions while maintaining cleaning efficacy and environmental safety.
2Reliability
If Nonylphenol ethoxylates are used as detergent surfactants, then cleaning performance is improved, but environmental persistence and toxicity increase
Solution Approach 1:
The patent extracts and eliminates the harmful Nonylphenol ethoxylate component from the detergent formulation while retaining effective alternative surfactants. The formulation specifically excludes NPEs and phosphorous, removing the environmental persistence issue while maintaining cleaning performance through the composite surfactant system.
Solution Approach 2:
The patent adopts alcohol ethoxylates as a replacement for Nonylphenol ethoxylates. These alternatives are environmentally benign and degrade quickly in the environment, sacrificing long-term persistence but gaining environmental safety and rapid biodegradability while maintaining effective cleaning performance.
3Object-affected harmful factors
If phosphorous-free detergent formulations are used, then environmental safety is improved, but smoke reduction control becomes more difficult
Solution Approach 1:
The patent establishes specific parameter ranges and ratios for phosphorous-free formulations: nonionic surfactant content (5-85% wt), free alcohol content (0.1-5% wt), and the critical mole ratio of smoke-reducing surfactant package to free alcohol (1.4:1). These controlled parameters enable smoke reduction and environmental safety without phosphorous additives.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The detergent composition effectively reduces or eliminates smoke and haze from textiles during heated laundry processes, maintaining cleaning performance and whiteness while ensuring environmental safety.
Implementation Method 1
detergent compositions comprising a smoke reducing surfactant package comprising an anionic surfactant, an amphoteric surfactant or mixtures thereof and a detersive surfactant comprising a nonionic surfactant having an amount of free alcohol
Data Source
AI summary
The present invention provides compositions and methods to reduce smoking and/or haze during a heated laundry process. The compositions include a smoke reducing surfactant package and a detersive surfactant containing an amount of free alcohol. The smoke reducing surfactant package includes an anionic surfactant, an amphoteric surfactant or mixtures thereof. The surfactants are selected such that the amount of smoke or haze produced is reduced and or eliminated when garments contacted with the compositions containing the surfactants are heated to at least about 250° F. Methods of using the compositions are also provided.